Use unctools.reduce for Python 3 compatibility

Signed-off-by: Michal Čihař <michal@cihar.com>

weblate/trans/models/unit.py

@@ -18,10 +18,9 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 
+import functools
 import traceback
 import multiprocessing
-# pylint: disable=W0622
-from functools import reduce
 
 from django.db import models
 from django.db.models import Q
@@ -235,7 +234,7 @@ class UnitManager(models.Manager):
                 if params[param]:
                     queries.append(param)
 
-            query = reduce(
+            query = functools.reduce(
                 lambda q, value:
                 q | Q(**{'%s%s' % (value, modifier): params['q']}),
                 queries,

weblate/trans/search.py

@@ -22,6 +22,7 @@
 Whoosh based full text search.
 '''
 
+import functools
 import shutil
 from whoosh.fields import SchemaClass, TEXT, NUMERIC
 from whoosh.filedb.filestore import FileStorage
@@ -250,7 +251,7 @@ def base_search(index, query, params, search, schema):
                 queries.append(
                     parser.parse(query)
                 )
-        terms = reduce(lambda x, y: x | y, queries)
+        terms = functools.reduce(lambda x, y: x | y, queries)
         return [result['pk'] for result in searcher.search(terms)]